Looking to define your brows and stimulate hair growth using a natural, plant-based, cruelty-free alternative to chemical dyes? Introducing brow henna to the Fox Valley area at PREMIER! Brow Henna is different than brow tint in a number of ways: Brow henna works by coating the hair and also staining the skin, giving a full powder brow appearance. Gaps and receding areas are filled in while brow hairs are colored and nourished. Results are long-lasting, but not permanent. Brow Henna last 2-14 days on the skin and up to 6 weeks on the hair. Completely painless treatment. Your service will take approximately 1 hour. Fully coats the hair and the.